* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', sans-serif;
}

body {
    background: #0e1b28;
    line-height: 1.6;
    color: #e0e0e0;
    font-size: 16px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* Header */
.header {
    text-align: center;
    margin: 30px 0;
}

.header h1 {
    font-size: 2.5em;
    margin-bottom: 10px;
    color: #4a90e2;
    text-shadow: 2px 2px 5px rgba(0, 0, 0, 0.3);
}

.header p {
    color: #ccc;
}

/* Navigation */
.nav {
    background: #1a2c40;
    padding: 15px;
    border-radius: 10px;
    margin-bottom: 30px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.nav ul {
    display: flex;
    justify-content: center;
    gap: 30px;
    list-style: none;
}

.nav a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
    padding: 8px 12px;
    border-radius: 5px;
}

.nav a:hover {
    color: #4a90e2;
    background-color: rgba(74, 144, 226, 0.1);
}

.nav a.active {
    color: #4a90e2;
    border-bottom: 2px solid #4a90e2;
}

/* Page Header */
.page-header {
    margin: 20px 0;
    padding: 15px;
    background: #1a2c40;
    border-radius: 10px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

.page-header h2 {
    color: #4a90e2;
    font-size: 1.8em;
    margin-bottom: 5px;
}

.page-header p {
    color: #aaa;
}

/* Filter Bar */
.filter-bar {
    background: #1a2c40;
    padding: 15px;
    border-radius: 10px;
    margin-bottom: 30px;
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    align-items: center;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

.filter-group {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
}

.filter-group label {
    color: #ccc;
    font-weight: 500;
    min-width: 100px;
}

.filter-group select,
.filter-group input[type="text"] {
    background: #0e1b28;
    color: #e0e0e0;
    border: 1px solid #334155;
    border-radius: 5px;
    padding: 8px 12px;
    outline: none;
    width: 100%;
    max-width: 300px;
}

/* Form Section */
.form-section {
    background: #1a2c40;
    padding: 20px;
    border-radius: 10px;
    margin-bottom: 30px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
    opacity: 1;
    transition: opacity 0.3s ease-in-out;
}

.form-section h2 {
    color: #4a90e2;
    margin-bottom: 15px;
}

form label {
    display: block;
    margin-top: 10px;
    font-weight: bold;
    color: #ccc;
}

form small {
    display: block;
    margin: 5px 0 15px;
    color: #aaa;
    font-size: 0.9em;
}

form input[type="text"],
form input[type="number"],
form input[type="date"] {
    width: 100%;
    padding: 8px;
    margin-top: 5px;
    border: 1px solid #334155;
    border-radius: 5px;
    background: #0e1b28;
    color: #e0e0e0;
}

form button {
    margin-top: 15px;
    background-color: #4a90e2;
    color: white;
    border: none;
    padding: 10px 20px;
    cursor: pointer;
    border-radius: 5px;
    font-weight: bold;
}

form button:hover {
    background-color: #3a78c0;
}

/* Footer */
.footer {
    margin-top: 50px;
    padding: 20px;
    text-align: center;
    color: #ccc;
    font-size: 0.9em;
    border-top: 1px solid #333;
}

/* Responsive Design for Mobile */
@media (max-width: 768px) {
    .nav ul {
        flex-direction: column;
        text-align: center;
        gap: 15px;
    }

    .filter-bar {
        flex-direction: column;
        align-items: flex-start;
    }

    .filter-group {
        width: 100%;
    }

    .filter-group select,
    .filter-group input[type="text"] {
        width: 100%;
    }
}
.alert {
    padding: 10px;
    margin: 20px auto;
    border-radius: 4px;
    max-width: 600px;
}
.alert-success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}
.alert-danger {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.alert {
    padding: 10px;
    margin: 20px auto;
    border-radius: 4px;
    max-width: 600px;
}

.alert-success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert-warning {
    background-color: #fff3cd;
    color: #856404;
    border: 1px solid #ffeeba;
}

.alert-danger {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}